Breguet hairsping
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I would agree, in order to work harden something you need to exceed it's yield strength when it moves from the elastic zone to the plastic zone and you get permanent deformation and work hardening which is fairly close to its failure point, relatively speaking and dependent on the material/alloy of course. In theory you can load something constantly within its elastic range and not suffer work hardening issues. -
Probably easier to get a complete new movement - but CousinsUK list it as discontinued. Maybe someone on here knows a substitute movement ?
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Any other thoughts on how I can get a replacement coil? Any “hidden” or unknown physical shops (in Australia or elsewhere) that might have them in stock (but not always online)? -
I discovered this last night when I printed my model, I'll try and tweak the design a little and re-post here
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That could work - two blunt pressure points would spread out the force required in order to reduce damage, and two small pins should fit slightly angled through the inner coil of the spring. I was thinking about this while working on other chores and had a crazy thought when I saw a can of expanding rigid sprayable foam, but who'd want to have to clean out the barrel and spring after that?
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